Questions by TwilaColby85

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1 answer 40 views

Calculate the heat of crystallization in kJ/mol of a substance, given that 100 g of it dissolved in water and cooled from 60°C to 20°C, releasing 5490 J of heat. The molar mass of the substance is 120 g/mol.

asked Jan 23 in ThermoChemistry

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1 answer 50 views

Calculate the enthalpy change for the dissolution of 5 grams of sodium chloride in 50 mL of water if the temperature of the solution decreases from 25 °C to 21 °C. The density of the solution is 1.0 g/mL and the specific heat capacity of the solution is 4.18 J/g°C. (Assume the heat exchange between the solution and the surroundings is negligible)

asked Jan 23 in ThermoChemistry

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1 answer 17 views

What is the role congruity theory?

asked Jan 14 in Psychology

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1 answer 24 views

What type of movement is caused by erosion from direct gravity?

asked Jan 8 in Science

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1 answer 42 views

What element enters the body when an organism breathes?

asked Jan 6 in Science

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1 answer 7 views

What are composed of an oxygen atom that forms single bonds with two carbon atoms?

asked Jan 2 in Science

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1 answer 8 views

The community of all of the living and nonliving parts of an environment is known as what?

asked Dec 27, 2024 in Science

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